I started a bitbucket, I am going to start posting code when I write small utilities.
The first one is here: https://bitbucket.org/jschloss/poly_clip. It has the code for poly_clip, which can load and union/difference/intersect wkt and wkb files. I also tried a few c++11 features, now that I have gcc 4.7 I can play with a few more than I could before.
I might post my sse mandelbrot code next.